1 865 987 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
10705465976921	14	43.3	old
4430289976752623	16	52.0	2014-07-18 11:29:31
535579736393777428823	21	68.9	2021-03-17 14:11:52

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-04	Oliver Kruse	698B9AD248AEDC8D	2	0	1	3
Verified (Factored)	2017-11-07	kkmrkkblmbrbk	698B9AD248AEDC8D	2	204011	1	3
Verified	2021-03-18	Nescro	6BB1CB8953092452	3	599853	5	3
Verified	2021-03-18	Oliver Kruse	6BB1CB8953092452	3	1082989	5	3

History

Date	User	Type	Result
2021-03-18	Ben Delo	CERT	PRP Certification Proof certified good
2021-03-18	Oliver Kruse	C-PRP	M1865987/10705465976921/4430289976752623/535579736393777428823 : 6BB1CB8953092452 PRP proof power = 7 PRP: Verified Proof certified good
2021-03-18	Nescro	C-PRP	M1865987/10705465976921/4430289976752623/535579736393777428823 : 6BB1CB8953092452 PRP: Verified PRP without proof (not generated)
2021-03-17	Chang Chia-Tche	F-ECM	Factor: 535579736393777428823 / (ECM curve 2, B1=50000, B2=5000000, Sigma=587749570579704)
2017-11-07	kkmrkkblmbrbk	C-PRP	M1865987/10705465976921/4430289976752623 : 698B9AD248AEDC8D PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1865987/10705465976921/4430289976752623 : 698B9AD248AEDC8D PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-07-18	-Anonymous-	F	Factor: 4430289976752623